<a rel="dofollow" href=" https://example.com/">example</a>
[url= https://example.com/]example[/url]
<a href=" https://example.com/">example</a>
[example](example.com)
<a rel="dofollow" href=" https://example.com/">example</a>
[url= https://example.com/]example[/url]
<a href=" https://example.com/">example</a>
[example](example.com)